* {
    padding: 0;
    margin: 0;
    list-style: none;
    text-decoration: none;
}

.width {
    width: 1500px;
    margin: 0 auto;
    /*使用变量*/
    color: var(--themeColor);
}

:root {
    /*定义变量*/
    --themeColor: #5b89fe;
}

.justify-around {
    justify-content: space-around;
}

.justify-evenly {
    justify-content: space-evenly;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.align-center {
    align-content: center;
}

.align-start {
    align-items: flex-start;
}

.align-end {
    align-items: flex-end;
}

.flex {
    display: flex;
}